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| author | H. Peter Anvin <hpa@zytor.com> | 2014-04-30 14:22:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-01 08:57:44 -0700 |
| commit | 789ce9dca8007ab5d7c72b9a174a29243817ac32 (patch) | |
| tree | 7b344616a976668594ff6cf56f0de7e3c32ab4eb | |
| parent | 98794f932138c81bfaa609fda21ddd7e97227abd (diff) | |
word-at-a-time: simplify big-endian zero_bytemask macro
This is simpler and cleaner. Depending on architecture, a smart
compiler may or may not generate the same code.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/asm-generic/word-at-a-time.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/word-at-a-time.h b/include/asm-generic/word-at-a-time.h index d96deb443f18..94f9ea8abcae 100644 --- a/include/asm-generic/word-at-a-time.h +++ b/include/asm-generic/word-at-a-time.h @@ -50,7 +50,7 @@ static inline bool has_zero(unsigned long val, unsigned long *data, const struct } #ifndef zero_bytemask -#define zero_bytemask(mask) (~0ul << __fls(mask) << 1) +#define zero_bytemask(mask) (~1ul << __fls(mask)) #endif #endif /* _ASM_WORD_AT_A_TIME_H */ |